Integumentary System Part 1

Which of the following is a primary function of the skin?

• Pumping blood throughout the body

• Synthesizing vitamin D

• Filtering waste products from the blood

• Producing digestive enzymes

What are the three main layers of the skin, from superficial to deep?

• Hypodermis, Dermis, Epidermis

• Epidermis, Hypodermis, Dermis

• Epidermis, Dermis, Hypodermis

• Dermis, Epidermis, Hypodermis

Which epidermal cells are responsible for synthesizing the pigment that gives skin its color?

• Keratinocytes

• Langerhans cells

• Merkel cells

• Melanocytes

What is the primary difference between thick skin and thin skin?

• Thick skin contains more nerve endings than thin skin.

• Thick skin has five epidermal layers, while thin skin has four.

• Thin skin is found on the palms and soles, while thick skin covers the rest of the body.

• Thick skin is more susceptible to damage than thin skin.

Which epidermal layer is exclusively found in thick skin, such as the palms of the hands and soles of the feet?

• Stratum granulosum

• Stratum spinosum

• Stratum lucidum

• Stratum basale

Why do epidermal cells die as they move from the deeper layers to the surface of the skin?

• They are exposed to harmful UV radiation.

• They become compressed and flattened, losing their structure.

• They move further from the blood supply in the dermis and suffocate.

• They are attacked by immune cells in the upper epidermal layers.

What specialized structures are found in the papillary layer of the dermis in thick skin, contributing to grip?

• Hair follicles

• Sebaceous glands

• Friction ridges

• Nerve endings

What is the primary tissue type that makes up the hypodermis, and what is one of its main functions?

• Dense irregular connective tissue; provides strength and elasticity.

• Areolar connective tissue; forms dermal papillae.

• Adipose connective tissue; provides insulation and energy storage.

• Epithelial tissue; protects against abrasion.